Premium WaterShield liner wraps the foot: Provides a sock-like fit while helping with water protection

Notches on each side of the tongue: Allow for easy on and off

Compression molded Phylon and Cushlon foams fused together with heat: Creates a dual density cushioning system for the ultimate ride

New firmer 3rd density foam runs from the heel to medial midfoot: Helps to slow the rate of pronation

Rubber crash rail on the lateral outsole acts as a cushioning device at contact: Provides a smooth transition and enhances flexibility

Heel-To-Toe Drop: 10mm

Women's NIKE AIR ZOOM STRUCTURE 18 FLASH :: Leave your competitors in the dust, day or night, by running in the newly updated Women's Nike Air Zoom Structure 18 Flash. You'll be running with more stability and confidence than ever before in this newest addition to the iconic Structure family that now offers powerful 360º reflectivity for low-light runs combined with an even better fit. Score loads of support without adding extra weight, compliments of the 18 Flash's lightweight mesh and strategically placed overlays. Enjoy an ultra-smooth, super protected ride from its Nike Zoom unit and decoupled crash pad. Get an extra dose of durability from this new Air Zoom Structure Flash's powerful BTS 1000 outsole material. 8.7 ounces